Carrier WeatherMaker 50TCQ 17-24 Series Service And Maintenance Instructions Download | Manualshive

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500229-01

Printed in U.S.A.

Form 50TCQ-17-24-02SM

Pg 1

8-2020

Replaces: 50TCQ-17-24-01SM

Service and Maintenance Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS   . . . . . . . . . . . . . . . . . . . 2
UNIT ARRANGEMENT AND ACCESS  . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Routine Maintenance   . . . . . . . . . . . . . . . . . . . . . . . . . 2
Seasonal Maintenance  . . . . . . . . . . . . . . . . . . . . . . . . 3
SUPPLY FAN (BLOWER) SECTION  . . . . . . . . . . . . . . 3
Supply Fan (Belt-Drive)   . . . . . . . . . . . . . . . . . . . . . . . 3
Belt  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Adjustable-Pitch Pulley on Motor  . . . . . . . . . . . . . . . 4
Changing the Fan Speed   . . . . . . . . . . . . . . . . . . . . . . 5
Aligning Fan and Motor Pulleys   . . . . . . . . . . . . . . . . 5
Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Motor   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
STAGED AIR VOLUME (SAV) CONTROL: 2-SPEED

FAN WITH VARIABLE FREQUENCY

DRIVE (VFD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Staged Air Volume (SAV) Indoor Fan Speed

System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Identifying Factory Option . . . . . . . . . . . . . . . . . . . . . 5
Unit Installation with SAV Option . . . . . . . . . . . . . . . 6
ADDITIONAL VFD INSTALLATION AND

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . 6

HEAT PUMP REFRIGERATION SYSTEM   . . . . . . . . . 6
Outdoor Coil   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Indoor Coil  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Recommended Coil Maintenance and Cleaning   . . . 6
Refrigeration System Components  . . . . . . . . . . . . . . 8
Reversing Valve and Check Valve Position  . . . . . . . 9
Troubleshooting Refrigerant Pressure Problems and

Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Refrigerant System Pressure Access Ports  . . . . . . 10
THERMOSTATIC EXPANSION VALVE (TXV)   . . . . . 11
TXV Operation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Replacing TXV  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
PURON (R-410A) REFRIGERANT   . . . . . . . . . . . . . . 12
Refrigerant Charge  . . . . . . . . . . . . . . . . . . . . . . . . . . 12
How To Use Cooling Charging Charts   . . . . . . . . . . 12
COOLING CHARGING CHARTS . . . . . . . . . . . . . . . . 13
Compressors  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Troubleshooting Cooling System  . . . . . . . . . . . . . . 17
CONVENIENCE OUTLETS   . . . . . . . . . . . . . . . . . . . . 19
Installing Weatherproof Cover . . . . . . . . . . . . . . . . . 19
Duty Cycle  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Maintenance   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Fuse on Power Type  . . . . . . . . . . . . . . . . . . . . . . . . . 20
Using Unit-mounted Convenience Outlets  . . . . . . . 20
HEAT PUMP CONTROLS  . . . . . . . . . . . . . . . . . . . . . 20
Central Terminal Board   . . . . . . . . . . . . . . . . . . . . . . 20

PROTECTIVE CONTROLS . . . . . . . . . . . . . . . . . . . . .21
Compressor Protection . . . . . . . . . . . . . . . . . . . . . . .21
Supply (Indoor) Fan Motor Protection  . . . . . . . . . . .21
Outdoor Fan Motor Protection  . . . . . . . . . . . . . . . . .21
Control Circuit, 24v  . . . . . . . . . . . . . . . . . . . . . . . . . .21
COMMERCIAL DEFROST CONTROL  . . . . . . . . . . . .21
Reversing Valve Control  . . . . . . . . . . . . . . . . . . . . . .22
Compressor Control  . . . . . . . . . . . . . . . . . . . . . . . . .22
Auxiliary (Electric) Heat Control . . . . . . . . . . . . . . . .22
Defrost   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Indoor Fan Off Delay  . . . . . . . . . . . . . . . . . . . . . . . . .23
Defrost Speedup Functions  . . . . . . . . . . . . . . . . . . .23
ELECTRIC HEATERS . . . . . . . . . . . . . . . . . . . . . . . . .23
Single Point Boxes and Supplementary Fuses . . . .25
Completing Heater Installation  . . . . . . . . . . . . . . . . .26
SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . . .26
System   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Controller  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Smoke Detector Locations  . . . . . . . . . . . . . . . . . . . .27
Completing Installation of Return Air Smoke

Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

FIOP Smoke Detector Wiring and Response   . . . . .30
Sensor and Controller Tests . . . . . . . . . . . . . . . . . . .30
Detector Cleaning   . . . . . . . . . . . . . . . . . . . . . . . . . . .32
INDICATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Normal State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Alarm State  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Resetting Alarm and Trouble Condition Trips   . . . .33
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

PremierLink™ Control

. . . . . . . . . . . . . . . . . . . . . . . .33

RTU Open Control System . . . . . . . . . . . . . . . . . . . .33
ECONOMI$ER SYSTEMS . . . . . . . . . . . . . . . . . . . . . .33
EconoMi$er IV Standard Sensors . . . . . . . . . . . . . .38

EconoMi$er® X (Factory Option)

. . . . . . . . . . . . . . .43

PRE-START-UP / START-UP . . . . . . . . . . . . . . . . . . .57
START-UP, GENERAL  . . . . . . . . . . . . . . . . . . . . . . . .57
Additional Installation/Inspection   . . . . . . . . . . . . . .57
START-UP, PREMIERLINK CONTROLS . . . . . . . . . .58
START-UP, RTU-OPEN CONTROLS . . . . . . . . . . . . .58
FASTENER TORQUE VALUES  . . . . . . . . . . . . . . . . .59
APPENDIX A

—

MODEL NUMBER

NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . .60

APPENDIX B

—

PHYSICAL DATA . . . . . . . . . . . . . . .61

APPENDIX C

—

FAN PERFORMANCE . . . . . . . . . . .64

APPENDIX D

—

WIRING DIAGRAMS . . . . . . . . . . . .67

APPENDIX E

—

MOTORMASTER SENSOR

LOCATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . .CL-1

WeatherMaker

®

50TCQ*17-24

Single Package Rooftop Unit with Heat Pump

with Puron

®

(R-410A) Refrigerant

1
2
3
...
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Summary of Contents for WeatherMaker 50TCQ 17-24 Series

Page 1: ...NIENCE OUTLETS 19 Installing Weatherproof Cover 19 Duty Cycle 20 Maintenance 20 Fuse on Power Type 20 Using Unit mounted Convenience Outlets 20 HEAT PUMP CONTROLS 20 Central Terminal Board 20 PROTECTIVE CONTROLS 21 Compressor Protection 21 Supply Indoor Fan Motor Protection 21 Outdoor Fan Motor Protection 21 Control Circuit 24v 21 COMMERCIAL DEFROST CONTROL 21 Reversing Valve Control 22 Compressor...

Page 2: ...ND 30 DAYS AFTER INI TIAL START Replace return air filter Clean outdoor hood inlet filters WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Before performing service or maintenance operations on unit LOCKOUT TAGOUT the main power switch to unit Electri cal shock and rotating equipment could cause severe injury WARNING ELECTRICAL OPERATION ...

Page 3: ...e out racks 2 Place the vertical filter access panel on the unit 3 Replace the mounting hardware attaching the panel to the unit and tighten securely OUTSIDE AIR HOOD Outside air hood inlet screens are permanent aluminum mesh type filters Check filters for dirt and debris Remove the screens when cleaning is required Clean by washing with hot low pressure wa ter and soft detergent and replace all s...

Page 4: ...elt over one of the pulleys 5 Install the new belt by gently sliding the belt over both pul leys and then sliding the motor and plate away from the fan housing until proper tension is achieved 6 Turn the jack bolts clockwise to increase the tension of the V belt 7 Adjust the V belt tension using Browning s Belt Tension Checker P N 1302546 or equivalent tool to 6 lb at a 5 8 in 1 6 cm deflection wh...

Page 5: ...ter to reduce wheel speed smaller pitch diameter to increase wheel speed or select a new system both pulleys and matching belt The horsepower rating of the belt is primarily dictated by the pitch diameter of the smaller pulley in the drive system typically the motor pulley in these units Do not install a replacement mo tor pulley with a smaller pitch diameter than was provided on the original fact...

Page 6: ...ges can be easily bent over and damage the coating of a pro tected coil when the tool is applied across the fins NOTE Use of a water stream such as a garden hose against a surface loaded coil will drive the fibers and dirt into the coil This will make cleaning efforts more difficult Surface loaded fibers and dirt must be completely removed prior to using low velocity clean water rinse PERIODIC CLE...

Page 7: ...quipment 2 5 gal 9 5L garden sprayer Water rinse with low velocity spray nozzle Totaline Environmentally Sound Coil Cleaner Application Instructions 1 Proper protection equipment such as approved safety glasses and gloves is recommended during mixing and application of Totaline environmentally sound coil cleaner 2 Remove all surface loaded fibers and debris using a vacuum cleaner or a soft non met...

Page 8: ...check valve cooling liquid line with a filter drier and a check valve dual function indoor coil with a vapor header check valve and heating liquid line with check a valve and a strainer Unit sizes D17 D24 have two compressor circuits See Fig 13 for typical unit piping schematic Dual function outdoor and indoor coils are designed to provide parallel coil circuits during evaporator function operatio...

Page 9: ...at the last Accutrol tee see Fig 17 where the side port is connected to the specific mode liquid line Each liquid line has a check valve to prevent back flow through the liquid line in its opposite mode This ensures correct flow di rection through the filter driers and the strainers preventing emp tying of off mode liquid lines into the evaporator function coil circuits Fig 15 Heat Pump Accutrol F...

Page 10: ...e face of the outdoor coil Failure to develop frost at an outlet tube can indicate a plugged or a missing orifice Refrigerant System Pressure Access Ports There are two access ports in each circuit on the suction tube and the discharge tube near the compressor These are brass fittings with black plastic caps The hose connection fittings are standard 1 4 in SAE male flare couplings The brass fittin...

Page 11: ...ow of refrigerant The increased refrigerant flow causes increased leaving evapora tor pressure which is transferred through the equalizer tube to the underside of the diaphragm This causes pin carrier spring pressure to close the TXV valve The refrigerant flow is effectively stabilized to the load demand with a negligible change in superheat Replacing TXV 1 Recover refrigerant 2 Remove TXV support...

Page 12: ...it is operating during the charging procedure If unit is equipped with a head pressure con trol device bypass it to ensure full fan operation during charging NOTE Charge checking and adjustments must be made while the system is operating in Cooling only NO CHARGE Use standard evacuation techniques for Puron R 410A refrig erant After evacuating system weigh the specified amount of refrigerant LOW C...

Page 13: ...OVERCHARGE UNIT IN HEATING MODE RECLAIM CHARGE AND RECHARGE UNIT PER NAMEPLATE 15 TON HEAT PUMP CHARGING CHART R410A REFRIGERANT COOLING MODE CIRCUIT A 20 40 60 80 100 120 140 150 200 250 300 350 400 450 500 550 600 Compressor Discharge Pressure psig Outdoor Coil Leaving Temperature Degrees F Add Charge if Above the Curve Remove Charge if Below the Curve 50HE501614 A ...

Page 14: ...NIT 15 TON HEAT PUMP CHARGING CHART R410A REFRIGERANT COOLING MODE CIRCUIT B 20 40 60 80 100 120 140 150 200 250 300 350 400 450 500 550 600 Compressor Discharge Pressure psig Outdoor Coil Leaving Temperature Degrees F Add Charge if Above the Curve Remove Charge if Below the Curve IN HEATING MODE RECLAIM CHARGE AND RECHARGE UNIT PER NAMEPLATE 50HE501615 A ...

Page 15: ...T 20 TON HEAT PUMP CHARGING CHART R410A REFRIGERANT COOLING MODE CIRCUIT A 20 40 60 80 100 120 140 150 200 250 300 350 400 450 500 550 600 650 Compressor Discharge Pressure psig Outdoor Coil Leaving Temperature Degrees F Add Charge if Above the Curve Remove Charge if Below the Curve IN HEATING MODE RECLAIM CHARGE AND RECHARGE UNIT PER NAMEPLATE 50HE501616 A ...

Page 16: ...T 20 TON HEAT PUMP CHARGING CHART R410A REFRIGERANT COOLING CODE CIRCUIT B 20 40 60 80 100 120 140 150 200 250 300 350 400 450 500 550 600 650 Compressor Discharge Pressure psig Outdoor Coil Leaving Temperature Degrees F Add Charge if Above the Curve Remove Charge if Below the Curve IN HEATING MODE RECLAIM CHARGE AND RECHARGE UNIT PER NAMEPLATE 50HE501617 A ...

Page 17: ...ssembly grille motor and fan 3 Loosen fan hub setscrews 4 Adjust fan height as shown in Fig 25 5 Tighten setscrews to 84 in lb 9 5 Nm 6 Replace condenser fan assembly Fig 25 Outdoor Fan Adjustment Troubleshooting Cooling System Refer to Table 5 for additional troubleshooting topics CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in damage to components The compressor is in a R...

Page 18: ...or indoor fan heating motor or capacitor Replace Restriction in refrigerant system Locate restriction and remove Compressor Operates Continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size Thermostat set too low cooling Reset thermostat Low refrigerant charge Locate leak repair and recharge Air in system Recover refrigerant evacuate system and rech...

Page 19: ...nstallation of a general purpose 125VAC 15AC circuit powered from a source elsewhere in the building Observe national and local codes when selecting wire size fuse or breaker requirements and disconnect switch size and location Route 125VAC power supply conductors into the bottom of the utility box containing the duplex receptacle UNIT POWERED TYPE A unit mounted transformer is factory installed t...

Page 20: ... unit Treat all units as electrically energized until the conve nience outlet power is also checked and de energization is con firmed Observe National Electrical CodeArticle 210 Branch Cir cuits for use of convenience outlets HEAT PUMP CONTROLS Central Terminal Board The Central Terminal Board CTB is a large printed circuit board that is located in the center of the unit control box This printed c...

Page 21: ...ized as a motor overload controller It is an over current device When the motor current exceeds the circuit breaker set point the device opens all motor power leads and the motor shuts down Reset requires a manual reset at the overload switch This device designated IFCB is located on the side of the supply fan housing behind the fan access panel TROUBLESHOOTING SUPPLY FAN MOTOR OVER LOAD TRIPS The...

Page 22: ...ers are energized and also during the Defrost cycle to eliminate a cold blow condition in the space Defrost The defrost control mode is a time temperature sequence There are two time components The continuous run period and the test defrost cycle period The temperature component is provided by the defrost thermostat s DFT1 and DFT2 mounted on the out door coil The continuous run period is a fixed ...

Page 23: ...ture The delay period begins when Y1 demand or W1 demand by the space thermostat is removed Defrost Speedup Functions The DFB permits the servicer to speed up the defrost cycle There are two speed up sequences relative speed up and an immediate forced defrost Speed up sequences are initiated by shorting jump er wires JMP17 and JMP18 together see Fig 30 use a straight edge screwdriver Shorting the ...

Page 24: ...zontal 2 CRHEATER272A00 208 230 3 60 75 Horizontal 2 CRHEATER273A00 460 400 3 60 50 25 17 4 Horizontal 2 CRHEATER274A00 460 400 3 60 50 50 34 7 Horizontal 2 CRHEATER275A00 460 400 3 60 50 75 52 Horizontal 2 CRHEATER276A00 575 3 60 25 Horizontal 2 CRHEATER277A00 575 3 60 50 Horizontal 2 CRHEATER278A00 575 3 60 75 Horizontal 2 CRHEATER279A00 208 230 3 60 25 Vertical 2 CRHEATER240A00 208 230 3 60 50 ...

Page 25: ...necessary Unit heater applications not requiring supplemental fuses require a special single point box without any fuses Connect power supply conductors to heater conductors and field supplied base unit pow er tap leads see Completing Heater Installation inside the emp ty single point box using UL approved connectors SAFETY DEVICES Electric heater applications use a combination of line break auto ...

Page 26: ...ecured to the housing with a single captive screw for easy access to the wiring terminals The controller has three LEDs for Power Trouble andAlarm and a manual test reset but ton on the cover face Fig 39 Controller Assembly Sensor The sensor see Fig 40 includes a plastic housing a printed cir cuit board a clear plastic cover a sampling tube inlet and an ex haust tube The sampling tube when used an...

Page 27: ...rough the side plates of the econo mizer housing placing it across the return air opening on the unit base pan See Fig 43 The holes in the sampling tube face down ward into the return air stream The sampling tube is connected via tubing to the return air sensor that is mounted on a bracket high on the partition between return filter and controller location This sensor is shipped in a flat mounting...

Page 28: ...l tight assembly does not interfere with blower operation Cut away any excess seal tight material 11 Route 10 ft 3 05 m cable through opening on lower right of control box Route with indoor fan wires securing cable to wires with wire ties provided 12 Route into sensor through knockout hole and plug end into the RJ45 connector Ensure knockout hole is sealed with grommet mounted to cable 13 Reinstal...

Page 29: ...ir Smoke Detector Sensor Location PICK UP TUBE BRACKET EMT TO SEAL TIGHT CONNECTOR VERTICAL ASSEMBLY KNOCKOUT LOCATION FOR VERTICAL KNOCKOUT LOCATION FOR HORIZONTAL HORIZONTAL ASSEMBLY SEE DETAIL A DETAIL A SEE DETAIL A ...

Page 30: ... FSD status is reported to connected CCN network RTU OPEN The 24 v signal is conveyed to the RTU OPEN J1 10 input termi nal This signal initiates the FSD sequence by the RTU OPEN control FSD status is reported to connected BAS network USING REMOTE LOGIC Five conductors are provided for field use see Highlight F in Fig 46 for additional annunciation functions ADDITIONAL APPLICATION DATA Refer to Fa...

Page 31: ...itch to the RESET TEST position for seven seconds 2 Verify that the test reset station sAlarm LED turns on 3 Reset the sensor by turning the key switch to the RESET TEST position for two seconds 4 Verify that the test reset station sAlarm LED turns off REMOTE TEST RESET STATION DIRTY SENSOR TEST The test reset station dirty sensor test checks the test reset station s ability to initiate a sensor d...

Page 32: ...tacts on the controller s two auxiliary relays switch positions The contacts on the controller s alarm initiation relay close The controller s remote alarm LED output is activated turned on The controller s high impedance multiple fan shutdown control line is pulled to ground Trouble state The SuperDuct duct smoke detector enters the trouble state under the following conditions A sensor s cover is...

Page 33: ...TROLLER S POWER LED IS OFF 1 Make sure the circuit supplying power to the controller is operational If not make sure JP2 and JP3 are set correctly on the controller before applying power 2 Verify that power is applied to the controller s supply input terminals If power is not present replace or repair wiring as required REMOTE TEST RESET STATION S TROUBLE LED DOES NOT FLASH WHEN PERFORMING A DIRTY...

Page 34: ...ive damper actuators Fig 50 EconoMi er IV Component Locations Fig 51 EconoMi er X Component Locations Fig 52 EconoMi er 2 Component Locations ECONOMI ER IV CONTROLLER OUTSIDE AIR TEMPERATURE SENSOR LOW AMBIENT SENSOR ACTUATOR WIRING HARNESS OUTSIDE AIR TEMPERATURE SENSOR WIRING HARNESS ECONOMI ER2 PLUG BAROMETRIC RELIEF DAMPER OUTDOOR AIR HOOD HOOD SHIPPING BRACKET GEAR DRIVEN DAMPER ...

Page 35: ...35 Fig 53 RTU Open Overlay for Economizer Wiring ...

Page 36: ...36 Fig 54 VFD Overlay for W2770 Controller Wiring ...

Page 37: ...tion for economizer to operate 2 PremierLink control requires that the standard 50HJ540569 out side air sensor be replaced by either the CROASENR001A00 dry bulb sensor or HH57A077 enthalpy sensor 3 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500 ohm resistor Fig 56 EconoMi er2 with 4 to 20 mA Control Wiring FOR OCCUPANCY CONTROL REPLACE JUMPER WITH FIELD SUPPLIED TIM...

Page 38: ...air sensor signal Modulation is based on the DCV signal Modulation is based on the greater of DCV and supply air sensor signals between minimum position and either maximum position DCV or fully open supply air signal Modulation is based on the greater of DCV and supply air sensor signals between closed and either maximum position DCV or fully open supply air signal Fig 57 EconoMi er IV Functional ...

Page 39: ...bove the setpoint the EconoMi er IV controller will adjust the outside air dampers to minimum position If the outdoor air tem perature is below the setpoint the position of the outside air damp ers will be controlled to provided free cooling using outdoor air When in this mode the LED next to the free cooling setpoint po tentiometer will be on The changeover temperature setpoint is controlled by t...

Page 40: ...V controller When using this mode of changeover control turn the enthalpy setpoint potentiometer fully clockwise to the D setting INDOOR AIR QUALITY IAQ SENSOR INPUT The IAQ input can be used for demand controlled ventilation con trol based on the level of CO2 measured in the space or return air duct Mount the accessory IAQ sensor according to manufacturer speci fications The IAQ sensor should be ...

Page 41: ...onoMi er IV controller the minimum position of the damper can be controlled from a remote location To control the minimum damper position remotely remove the factory installed jumper on the P and P1 terminals on the EconoMi er IV controller Wire the field supplied potentiometer to the P and P1 terminals on the EconoMi er IV controller See Fig 64 DAMPER MOVEMENT Damper movement from full open to fu...

Page 42: ...me normal operation CRENTDIF004A00 and CRTEMPSN002A00 accessories are used on many different base units As such these kits may contain parts that will not be needed for installation 33ZCSENCO2 is an accessory CO2 sensor 33ZCASPCO2 is an accessory aspirator box required for duct mounted applications CRCBDIOX005A00 is an accessory that contains both 33ZCSEN CO2 and 33ZCASPCO2 accessories The custom ...

Page 43: ...ooting DCV MINIMUM AND MAXIMUM POSITION To check the DCV minimum and maximum position 1 Make sure EconoMi er IV preparation procedure has been performed 2 Connect a 9 v battery to AQ positive node and AQ1 negative node The DCV LED should turn on The actua tor should drive to between 90 and 95 open 3 Turn the DCV Maximum Position potentiometer to mid point The actuator should drive to between 20 an...

Page 44: ...vac RMS 50 60 Hz Transformer 100 va maximum system input Nominal Power Consumption at 24 vac 60 Hz 11 5 VA without sensors or actuators Relay Digital Output Rating at 30 vac maximum power from Class 2 input only 1 5A run 3 5A inrush at 0 45PF 200 000 cycles or 7 5A inrush at 0 45PF 100 000 cycles External Sensors Power Output 21 vdc 5 at 48mA INPUTS Sensors NOTE A Mixed Air MA analog sensor is req...

Page 45: ...ACT 2 10 2 10 vdc Damper Actuator Output 2 10 vdc ACT COM COM Damper Actuator Output Common ACT 24v 24 vac Damper Actuator 24 vac Source NA AUX2 OCC E GND EXH1 AUX1 O Y2 Y1 Y2 O Y1 O C R 50048848 002 Rev A NA A2 OCC EX A1 Y2I Y2O Y1I Y1O C R MAT MAT OAT OAT S BUS S BUS IAQ 2 10 IAQCOM IAQ 24V ACT 2 10 ACT COM ACT 24V MA MA OA OA SB SB SB SB SB SB V C R V C R NA 50040839 001 Rev G HJW10 www energy ...

Page 46: ...xit a menu s item and return to the list of menus Fig 70 W7220 Controller Navigation Buttons To use the keypad when working with Setpoints System and Ad vanced Settings Checkout tests andAlarms 1 Navigate to the desired menu 2 Press the Enter button to display the first item in the currently displayed menu 3 Use the and buttons to scroll to the desired parameter 4 Press the Enter button to display...

Page 47: ...ac on terminal Y1 I COOL Y1 OUT OFF ON OFF FIRST STAGE COOLING RELAY OUTPUT Cool stage 1 Relay Output to stage 1 mechanical cooling Y1 OUT terminal COOL Y2 IN OFF ON OFF SECOND STAGE COOLING DEMAND Y2 IN Y2 I signal from space thermostat or unitary controller for second stage cooling ON 24 vac on terminal Y2 I OFF 0 vac on terminal Y2 I COOL Y2 OUT OFF ON OFF SECOND STAGE COOLING RELAY OUTPUT Cool...

Page 48: ...pressor lockout At or below the set point the Y1 O and Y2 O will not be energized on the controller DRYBLB SET 63 F 17 C 48 F to 80 F 9 C to 27 C increment by 1 F OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT Dry bulb set point will only appear if using dry bulb changeover Set point determines where the economizer will assume outdoor air temperature is good for free cooling e g at 63 F unit will eco...

Page 49: ...mode for W Shutdown is not available in 2 speed fan mode In HP O B mode HP O energize heat pump on Cool default HP B energize heat pump on heat FAN SPEED 2 speed 1 speed 2 speed Sets the economizer controller for operation of 1 speed or 2 speed supply fan The controller does not control the fan but positions the OA and RA dampers to heating or cooling mode NOTE 2 speed fan option also needs Heat W...

Page 50: ...N Allows for operator to adjust for an out of calibration humidity sensor DA T CAL 0 0 F 2 5 F DISCHARGE AIR TEMPERATURE CALIBRATION Allows for the operator to adjust for an out of calibration temperature sensor 2SP FAN DELAY 5 Minutes 0 to 20 minutes in 1 minute increments TIME DELAY ON SECOND STAGE ECONOMIZING When in economizing mode this is the delay for the high speed fan to try to satisfy th...

Page 51: ... T ERR RETURN AIR S BUS SENSOR ERROR Return air enthalpy sensor has failed or become disconnected check wiring then replace sensor if the alarm continues RA SYLK H ERR DA SYLK T ERR DISCHARGE AIR S BUS SENSOR ERROR Discharge air sensor has failed or become disconnected check wiring then replace sensor if the alarm continues OA SENS T ERR OUTSIDE AIR TEMPERATURE SENSOR ERROR Outdoor air temperature...

Page 52: ...S Closed On On High 24 v On 24 v On MIN POS Closed Yes Off Off High 0 v Off 0 v Off MIN POS Closed On Off High 0 v Off 0 v Off MIN POS to Full Open Closed to Full Open On On High 24 v On 0 v Off MIN POS to Full Open Closed to Full Open Table 22 Dry Bulb Operation with DCV CO2 Sensor 1 Speed Fan DEMAND CONTROLLED VENTILATION DCV OUTSIDE AIR GOOD TO ECONOMIZE Y1 I Y2 I FAN SPEED Y1 O Y2 O OCCUPIED U...

Page 53: ...f Off High 0 v Off 0 v Off MIN POS Closed On Off High 0 v Off 0 v Off MIN POS to Full Open Closed to Full Open On On High 24 v On 0 v Off MIN POS to Full Open Closed to Full Open Table 24 Enthalpy Operation with DCV CO2 Sensor 1 Speed Fan DEMAND CONTROLLED VENTILATION DCV OUTSIDE AIR GOOD TO ECONOMIZE Y1 I Y2 I FAN SPEED Y1 O Y2 O OCCUPIED UNOCCUPIED Below CO2 set No Off Off High 0 v Off 0 v Off V...

Page 54: ...I Y2 I FAN SPEED Y1 O Y2 O OCCUPIED UNOCCUPIED Below CO2 Set No OFF OFF LOW 0v Off 0v Off VENTMIN Closed ON OFF LOW 24v On 0v Off VENTMIN Closed ON ON HIGH 24v On 24v On VENTMIN Closed Yes OFF OFF LOW 0v Off 0v Off VENTMIN Closed ON OFF LOW 0v Off 0v Off VENTMIN to Full Open Closed to Full Open ON ON HIGH 24v On 0v Off VENTMIN to Full Open Closed to Full Open Above CO2 Set No OFF OFF LOW 0v Off 0v...

Page 55: ...the supply fan and controls the OAdamper to the required posi tion see Table 29 The W heating mode is not controlled by the W7220 but it re quires the status to know where to position the OA damper for minimum position for the fan speed The 2 speed fan delay is available when the system is pro grammed for 2 speed fan in the System Setup menu item The 2 speed fan delay is defaulted to 5 minutes and...

Page 56: ...n the Checkout menu using the and buttons 2 Press the Enter button to select the item RUN appears 3 Press the Enter button to start the test The unit pauses and then displays IN PROGRESS When the test is complete DONE appears 4 When all desired parameters have been tested press the Menu Up button to end the test The Checkout tests can all be performed at the time of installation or at any time dur...

Page 57: ...d at the factory There may also be additional installation steps or inspection required during the start up process Additional Installation Inspection Inspect the field installed accessories for proper installation mak ing note of which ones do or do not require configuration changes Inspect the RTU OPEN s Alarms for initial insight to any poten tial issues See troubleshooting section for alarms I...

Page 58: ...tion above room temperature Compres sor will shut off Evaporator fan will shut off after a 60 second de lay if the dip switch for the indoor fan off delay on the Defrost Control Board DFB is set to on To shut off unit set system selector switch to the OFF position Resetting thermostat at a position above room temperature shuts the unit off temporarily until space temperature exceeds thermo stat se...

Page 59: ...or pulley setscrew 72 in lb 8 1 Nm 5 in lb 0 6 Nm Fan pulley setscrew 72 in lb 8 1 Nm 5 in lb 0 6 Nm Blower wheel hub setscrew 72 in lb 8 1 Nm 5 in lb 0 6 Nm Bearing locking collar setscrew 50 in lb 6 2 Nm 60 in lb 6 8 Nm Compressor mounting bolts 65 in lb 7 3 Nm 75 in lb 8 5Nm Condenser fan motor mounting bolts 20 in lb 2 3 Nm 2 in lb 0 2 Nm Condenser fan hub setscrew 84 in lb 9 5 Nm 12 in lb 1 4...

Page 60: ...u Al Cu Louvered Hail Guard S Cu Cu Cu Cu Louvered Hail Guard Voltage 1 575 3 60 5 208 230 3 60 6 460 3 60 Design Revision Factory Assigned Base Unit Controls 0 Base Electromechanical Controls can be used with W7212 EconoMi er IV Non Fault Detection and Diagnostic 1 PremierLink Controller 2 RTU Open Multi Protocol Controller 6 Electromechanical with 2 Speed Fan and W7220 Economizer Controller can ...

Page 61: ...ange 514 680 690 863 Motor frame size 56 56 Fan Qty Type 2 Centrifugal 2 Centrifugal Fan Diameter in 15 X 15 15 X 15 MEDIUM STATIC Motor Qty Drive Type 1 Belt Max BHP 3 7 RPM range 679 863 Motor frame size 56 Fan Qty Type 2 Centrifugal Fan Diameter in 15 X 15 HIGH STATIC Motor Qty Drive Type 1 Belt Max BHP 4 9 RPM range 826 1029 Motor frame size 56 Fan Qty Type 2 Centrifugal Fan Diameter in 15 x 1...

Page 62: ...l Fan Diameter in 18 x 15 15 x 11 MEDIUM STATIC HIGH EFF Motor Qty Drive Type 1 Belt Max BHP 6 5 6 9 7 0 8 3 RPM range 835 1021 Motor frame size 184T Fan Qty Type 2 Centrifugal Fan Diameter in 18 x 15 15 x 11 HIGH STATIC HIGH EFF Motor Qty Drive Type 1 Belt Max BHP 10 5 11 9 11 9 11 0 RPM range 941 1176 Motor frame size 213T Fan Qty Type 2 Centrifugal Fan Diameter in 18 x 15 15 x 11 CONDENSER COIL...

Page 63: ... 46 740 2 88 797 3 34 852 3 82 CFM AVAILABLE EXTERNAL STATIC PRESSURE IN WG 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 4500 808 2 27 864 2 66 916 3 06 965 3 48 1012 3 92 4900 819 2 48 874 2 89 926 3 31 975 3 74 1021 4 19 5250 829 2 68 884 3 10 935 3 53 983 3 98 1029 4 44 5650 841 2 92 895 3 36 946 3 81 994 4 28 1040 4 76 6000 852 3 15 906 3 61 956 4 04 1003 4 56 6400 865 3 43 918 ...

Page 64: ...3 54 787 4 21 6000 580 2 04 643 2 10 702 3 22 756 3 88 806 4 58 6400 610 2 39 670 2 41 727 3 64 779 4 32 6750 636 2 74 695 2 70 749 4 03 800 4 74 7150 667 3 18 723 3 02 775 4 52 7500 694 3 60 748 3 42 CFM AVAILABLE EXTERNAL STATIC PRESSURE IN WG 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 4500 781 3 81 828 4 46 4900 799 4 17 845 4 84 5250 816 4 49 5650 6000 6400 6750 7150 7500 STD ...

Page 65: ... RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 6000 861 2 80 912 3 15 962 3 50 1008 3 86 1053 4 23 6500 880 3 18 930 3 55 978 3 92 1024 4 30 1068 4 69 7000 900 3 60 949 3 99 996 4 38 1041 4 78 1085 5 19 7500 921 4 06 969 4 47 1016 4 89 1060 5 31 1102 5 74 8000 943 4 57 990 5 00 1036 5 44 1079 5 89 1121 6 34 8500 965 5 12 1012 5 58 1056 6 05 1099 6 52 1140 6 99 9000 988 5 72 1034 6 21 1078 6 70 1120 7 19...

Page 66: ...60v 575v Max BHP 6 5 6 9 7 0 8 3 HIGH Static 941 1176 RPM Voltage 208v 230v 460v 575v Max BHP 10 5 11 9 11 9 11 0 Outside operating range BOLD Units exceeding Max BHP of unit voltage require a field supplied drive changes with high static require blower pulley KR51BL017 805 1007 Underscore Field supplied drive changes with standard motor required blower pulley KR51BN615 and belt KR29BF052 598 731 ...

Page 67: ...ng are required to provide a complete unit control diagram Table H Unit Wiring Diagrams UNIT SIZE VOLTAGE CONTROL POWER D17 208 230 3 60 50HE500937 G page 68 50HE500894 L page 69 460 3 60 50HE500895 L page 70 575 3 60 D24 208 230 3 60 50HE500937 G page 68 50HE500894 L page 69 460 3 60 50HE500895 L page 70 575 3 60 ALL RTU Open 50HE501687 C page 71 ALL PremierLink 50HE500891 F page 72 APPENDIX D WI...

Page 68: ...68 Fig B 50TCQD17 24 Control Wiring Diagram APPENDIX D WIRING DIAGRAMS ...

Page 69: ...69 Fig C 50TCQD17 24 Power Wiring Diagram 208 230 3 60 Units APPENDIX D WIRING DIAGRAMS ...

Page 70: ...70 Fig D 50TCQD17 24 Power Wiring Diagram 460 3 60 575 3 60 Units APPENDIX D WIRING DIAGRAMS ...

Page 71: ...71 Fig E RTU Open Overlay APPENDIX D WIRING DIAGRAMS ...

Page 72: ...72 Fig F PremierLink Overlay APPENDIX D WIRING DIAGRAMS ...

Page 73: ...73 Fig G 50TCQD17 24 Motormaster Sensor Location SENSOR LOCATION APPENDIX E MOTORMASTER SENSOR LOCATION ...

Page 74: ...ht to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53500229 01 Printed in U S A Form 50TCQ 17 24 02SM Pg 74 8 2020 Replaces 50TCQ 17 24 01SM 2020 Carrier ...

Page 75: ...k all electrical connections and terminals for tightness Y N _____ Check that return indoor air filters are clean and in place Y N _____ Verify that unit installation is level Y N _____ Check fan wheels and propeller for location in housing orifice and setscrew tightness Y N _____ Check to ensure that electrical wiring is not in contact with refrigerant lines or sharp metal edges Y N _____ Check p...

Page 76: ...ANT SUCTION CIRCUIT 1 _____________ PSIG _____________ F CIRCUIT 2 _____________ PSIG _____________ F REFRIGERANT DISCHARGE CIRCUIT 1 _____________ PSIG _____________ F CIRCUIT 2 _____________ PSIG _____________ F Verify that 3 phase fan motor and blower are rotating in correct direction Y N _____ Verify that 3 phase scroll compressor is rotating in the correct direction Y N _____ Verify refrigera...

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